[GHC] #7700: iOS patch no 3: enable/disable terminfo more precisely by os

[GHC]

#7700: iOS patch no 3: enable/disable terminfo more precisely by os
------------------------------+---------------------------------------------
Reporter:  StephenBlackheath  |          Owner:                  
    Type:  bug                |         Status:  patch           
Priority:  normal             |      Component:  Compiler        
 Version:  7.7                |       Keywords:                  
      Os:  Unknown/Multiple   |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown       |      Blockedby:                  
Blocking:                     |        Related:                  
------------------------------+---------------------------------------------
Changes (by StephenBlackheath):

  * status:  infoneeded => patch


Comment:

 That was tricky. With 3e I tested a native linux build and an ios cross
 build to the start of the stage2 compiler, so I'm very confident now. So,
 please review.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7700#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler